To benefit from this ourse, you must be familiar with basic UNIX system administration functions and must know how to:
Configure the system kernel
Start and stop the system
Set up user and group accounts
Monitor the system
Configure the system log
Knowledge of shell programming is helpful, but not required.
An operating system (or OS) is usually sitting between the userís application programs and the computer hardware, which exploits the computer hardware
resources to provide a set of services to the computer system users.
The hierarchical view of a typical computer system is shown in Figure 1.1.